AP DAY 5

9-12-14

Opener

Take out or check out an Internet enabled device Check your AP Bio email. You should have FOUR

emails from Ziady (riderapbio@gmail.com), sharing the following with you: A test document AP HW #2 AP HW #3 Summary Write: Natural Selection

Task: Make sure you can OPEN and EDIT these documents

7-10 MINUTES

Want to work on your phone? Download

GOOGLE DRIVE

Agenda

Natural Selection Summary Write Discuss HW #3 Lab One: M&M Color Chi Squared

Analysis HW #1 Returned Textbooks

Learning Targets

I can explain how natural selection works as a “major mechanism” for evolution

I can determine if a set of data shows statistically significant variation using a Chi-Squared analysis

Writing

Check your gmail; find the gmail where I shared the “Summary Write” doc with you.

Respond to prompt IN THAT DOC! You can use your notes, BUT try to keep

track (in your brain) of how much you used them

DO YOUR BEST: this piece of writing will help me determine what you understand

You have 25 minutes If you finish early: re-read, edit, underline key

terms, add images to support your answer

Prompt

Explain how natural selection results in the evolution of populations over time. Include at least one example to illustrate your

point Use the correct scientific vocabulary: species,

population, variation, trait, heritable, environment, fitness, adaptation/adapt, reproduction, offspring

Make sure your explanation includes a description of both the short term AND long term impacts of natural selection on a population

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Question # 1

1. What is the Chi-Square test for?

Question #2

What do the different terms in the equation (χ2, Σ, Oi, Ei) stand for?

Question #3

What is the null hypothesis?

Question #7

Basic idea: given the choice to move to a wet or dry environment, where will the pill bugs go? CALCULATE THE CHI-SQUARED VALUE AND EVALUATE THE NULL HYPOTHESIS.

Show answer on white board

Chi Squared Table

M&M Lab

Read the Introduction to the Lab, and the procedure

Separate your M&Ms by color, and count the number of each type

Determine the expected value for each color (percentage x total)

Complete data table and calculate Chi-Squared value

Determine degrees of freedom, use chart to evaluate null hypothesis

Share data with class! Rinse and repeat with class data, then answer questions.

M&M class data

Each table group needs to: Share number observed for each color of M&M

THEN, this data will be used to complete the SECOND data table/Chi-Squared analysis

If we have time, you can finish this in class later. If not, it is homework.

DUE Monday, if not finished in class. You must complete: Data tables/calculations Analysis Questions

AP Bio Website